Automatic screw cutting and turning lathe.



No. 782,220. PATENTED FEB. 14, 1905. J. COULTER & AI D. LAWS.

s. E. LAWS. ADMINISTBATRIX 0F A. D. LAWS, DBG'D. AUTOMATIC SCREW CUTTINGAND TURNING LATHE.

APPLICATION FILED JAN. 7. 1902.

6 SHEETS-SHEET 1.

VEN TOHS.

und.

No. 782,220. PATBNTED FEB. 14, 1905.

J. COULTER & A. D. LAWS.

s.E.LAws.ADM1N1sTRATnIx or A. D. LAWS, DBo'n. AUTOMATIC SCREW CUTTINGAND TURNING LATHB.

APPLIOATION FILED JAN. 7. 1902.

6 SHEETS-SHEET 2.

l NUENEN W/TNESSES Img-. w-w lllllllglllpmllll Illlulllliill HNI!ll'llllllllllllll /N VENTHS- Y mi Arromvfr N0. 782,220. PATENTED FEB.14,1905. J. COULTER & A. D. LAWS.

s. E. LAWS. ADMINISTRATMX or A. D. LAWS, DEU'D. AUTOMATIC SCREW CUTTINGAND TURNING LATHE.

SSHEEI'S-BHEBT 3.

APPLICATION FILED JAN. 7. 1902.

/N VENTO/i5.

Q7 di m 'f/f' vA from/Er www No. 782,220. VPATENTED FEB. 14, 1905. J.COULTER & A. D. LAWS.

s.1:.LAWs. ADMINISTRATBIX or A. D. LAWS, DEOD. AUTOMATIC SCREW CUTTINGAND TURNING LATHE.

APPLICATION FILED JAN. 7. 1902.

A T E E H S S T E E H S 6 /N VEN Tons.

Q @A Maak PMM non/vf Y /Wsyf .y LW

No. 782,220. PATENTED PEB. 14, 1905. J. COULTER 6L AI D. LAWS.

s. E. LAWS. ADMINISTRATBIX or A. D. LAWS, DEG'D. AUTOMATIC SCREW CUTTINGAND TURNING LATHE.

APPLICATION EILBD JAN. 7. 1902.

6 SHEETS-SHEET 5.

W/TNESSES .A2Z

No. 782,220. PATBNTED FEB. 14, 1905. J. COULTER L AI D. LAWS.

S. E. LAWS. ADMINISTRATRIX 0F A. D. LAWS. DBCD4 AUTOMATIC SCREW CUTTINGAND TURNING LATHE.

APPLICATION FILED JAN. 7. 1902.

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UNITED STATES Patented February 14, 1905.

ihATENT OEETcE.

JAMES COULTER, OF BRIDGEPORT, OONNEO'IIOU'I, ANI) SARAH E. LAlVS,ftDMlNISTRAiRlX OF ALBERT l). LAlVS, DEOEASICI).

AUTOMATIC SCREW CUTTING AND TURNlNG LATHE.

SPECIFICATION forming part of Letters Patent No. 782,220, dated February14, 1905.

Application filed January 7, 1902. Serial No. 88,817.

To r/// /r/m//z/ if 71mg/ concer/L.'

Be it known that we, JAMES COULTER, a citi- Zen of the United States,and a resident of Bridgeport, county of Fairfield. State of Connecticut,and ALBERT l). LAws, deceased, (represented by SARAH E. LAws,adrninistratrix.) late a citizen otA the United States, and a residentot' said city, county, and State, have invented certain new and usefulImprovements in Automatic Screw Cutting and Turning Lathes, ot' whichthe following is a speciication.

This invention relates to an improvement in lathes or machines of likecharacter; and it consists in certain details of construction whereb)Yautomatic turning and screw-cutting is effected.

To enable others to understand the invention, reference is had to theaccompanying drawings, in which Figure 1 represents an upper plan viewof the lathe and broken view of the drivin, rpulley. Fig. is a frontelevation of the lathe and broken view of the legs. Fig. 3 is a rearelevation of the lathe and broken view of the legs. Fig. A is an upperplan view of the carriage with the tool-holders removed broken view ot'the reversing-shaft, and broken view olil one of thetool-holder-adjListingscrews and lockingnuts therefor, circular handlesor knurled disks for operating the adjustingscrews, and sectional viewof the threaded lugs projecting from the tool-holders. Fig. 5 is a sideelevation o1 the carriage and toolholders mounted thereon, brokensectional view of the bed, and sectional view ofthe reversing-shaft andVfeed-screw on line l of Fig. 1. Fig. o is a broken view of thecarriage, head-stock, and broken view of the reversingshai't mounted insaid carriage and head-stock, showing the carriage moving in thedirection of arrow Fig. 'T is a sectional detail view ot thereversing-shaft on line c oi' Fig. o', showingl the cams foroperatingthetool-holders mounted thereon and the stop-clutch engaged with one ot'the stops connected with the head-stock, as shown at Fig. 6, also endview ot' both stops. Fig. 8 is a view.similar to Fig. (j, showing thecarriage traveling in the direction of arrow Fig. 9 is a view similar toFig. T,hut showing the stop-clutch in the position shown at Fig. S.Figs. 10 and 11 are detail elevations similar to Figs. T and except thatthe cams for operating the toolholders are removed and the stop-clutchis turned half-wav around, so as to operate the tool-holders` in anopposite manner. Fig. 12 is a broken view of the carriage, lathe-bed,and hollow threaded adjusting-screw for operating the front tool holder.Fig. 13 is a broken front elevation of the hed, carriage, and toothedwheel t'or operating the tool-holders set for outside work. Fig. 1A is aview similar' to Fig. 13, hut showing the toothed wheel set for insidework.

lts construction and operation are as follows:

1 represents the lathe-hed; 2, the carriage.

3 and A, Fig. `are tool-holders carrying the tools 5 and o'.

T and 8 are movable tool-holder supports on which the t(' olholders aremounted'. Said supports are mounted on the lathe-carriage and areadapted to move to and Vfrom the center in thel Afollowing manner: 10 isa lug projecting down from the tool-holder A. 11 is the feed-screw forthe tool-holder A, whose threaded portion 11" engages a threaded hole(not shown) in the lug 10 for moving said tool-holder on its support. 1Qrepresentsjamnuts on this feed-screw which, in connection with theshouldered portion 13 and the har 1A, attached to the support T, serveto take up the lost motion of said feed-screw. 15 is a sleeve whosethreaded portion 15 engages with a threaded hole (not shown) of the lug1G, depending from the tool-holder The threadless portion of thefeed-screw 11 passes through the sleeve 15 and extends outside of thecarriage and has slidahl)Y secured to its outer end the circular knurleddisk 1T, (see also Fig. 4,) h v means of which the toolholder A is movedon its support. 1o is a knurled disk lirmlwY secured to the outer pro-`iecting end of the sleeve 15, whereh'vY the toolholder 3 is also movedon its support. 19 represents jam-nuts on this sleeve, which engage, theoutside vertical face ot' the support 3, which, in connection with theshoulder 2O of said sleeve engaging' theinner wall of said supl strikesthe stop 31 the ratchet-wheel will also port, take up the lost motion insaid sleeve. 21 is a threaded ring let into the front face of the disk18, which ring engages the threaded end of the sleeve 15 to hold saiddisk in place. 22 is a ratchet-wheel mounted upon theinwardly-projecting hub 18 of the disk 18 and is secured thereto, and 23is an arm loosely mounted on said hub whose lower end carries thespring-actuated pawl 24, adapted to engage saidratchet-wheel. (See Figs.2, 4, 5, 13, and 14.) This pawl is of common construction and operatesin the housing 23a at the lower end of the arm 23 and is held out ofengagement with the ratchet-wheel when the pin 23b rests on the underside of said housing. The ratchet-wheel 22 is the medium forautomatically feeding one or both of the toolholders 3 and 4. In themajority of cases the tool-holders will both be in operation, onecarrying the roughing and the other the finishing tool, and it mattersnot which is used for roughing or finishing, only the roughingtoolshould be set a trifle in advance of the finishing-tool. When both toolsare in operation, the outer disk 17 is firmly clamped to the disk 18 bymeans of the bolt 25 and nut 26, and as the threaded portion 11a of thefeedscrew is a right-hand thread and the threaded end of the bushing 15is a left-hand threadv it is evident that both tool holders will bebrought toward the center when the disks 17 and 18 are thus lockedtogether.

The automatic rotation of the ratchet-wheel 22 to operate thetool-holders is effected, as before mentioned, by the pawl 24, and thisis operated in the following manner: 27, Figs.

12 and 13, is a slide-bar operatively mounted in the front face of thelathe-carriage 2, and 28 is an adjustable stop adapted to be secured tothe lathe-bed at any point to limit the travel of the carriage in onedirection. 29 (see also Fig. 5) is a pin projecting rearward from thearm 23 into the path of travel of the slide-bar 27, so that when thecarriage has traveled back in the direction of arrow e, Fig. 13, inreadiness for the tools to be fed in at the end of a piece of work whenrighthand threads are to be cut the inner end 27 of the slide-bar 27will engage the pin 29 and cause the ratchet-'wheel 22 to turn in thedirection of arrow f, and when the carriage h'as started forward in theopposite direction, as indicated by arrow g, the spring 30 will operatethe arm 23 to carry the pawl 24 back in readiness to engage other teethof the ratchet- Wheel.

In cutting left-hand threads the stop 28 is moved out of the way and thestop 31 is used. 32 is a similar slide-bar and carries the teeth 32 atits inner end to engage the pinion 33, mounted on the short shaft 33,which shaft is journaled in the carriage. The bar 27 is also providedwith the teeth 27h, which also engage this pinion, so that when the bar32 be turned in the direction of arrow f.

The above description applies to outside threading and turning. Forinside threading or turning the pawl 24 and ratchet-wheel may bereversed, as shown at Fig. 14, in which case the slide-bars 27 and 32will also be reversed and the pinion 33 transferred to the opposite sideof said pawl. For this purpose the bearing 34, Fig. 13` is provided inthe carriage. This change will cause the ratchetwheel 22 to turn in thedirection of arrow L, in which case the spring 30, which is also changedto the opposite side of the arm 23, will bring back the pawl, as beforedescribed, which may also be either for right or left hand cutting. Inthis operation the stop 3l is used, and the stop 28 is moved out of theway. However, as only one tool is used on inside work it is notnecessary to make the change just described, as the tool-holder 4 can beused for all inside work, and thus the construction shown at Fig. 13 canb e used for both outside and inside work.

The tool-holders carrying the ltools are automatically thrown in and outof cutting position through the medium of the reversingshaft 35. Thisshaftis supported in the brackets 36 and 37 of the carriage, as shown atFigs. 1 and 3, also in the lathe-bracket 38 and the brackets 39 and 40of the head-stock 40a. This shaft makes one-half of a revolution toeffect the movement of the tool-holders-viz., at the extreme forward andbackward travel of the lathe-carriage. 41 and 42 (see Figs. 4, 5, 6, 8,and 9) are cams mounted on this shaft and are adapted to travel with thelathe-carriage by reason of their sides engaging with the side walls ofthe vertical slots 43 and 44 of the tool-holder support 7. These camsare provided with the key 45, (see also Figs. 7 and 8,) which slidesfreely in the keyway 35 of the reversing-shaft.

46 is a slide-bar on the front end of which the tool-holder support 8 issecured by means of the screws 47. The rear end has the uprights 48 and49, faced with thehardened-steel pieces 50 and 51, and between these thecam 41 operates to move the slide-bar 46 and carry the support 8 to andfrom the work. The cam 42 operates against the steel pieces 52 and 53,lying against the end walls of the vertical slot 44 of the support 7 tooperate said support in a similar manner just explained for support 8.The vertical slot 43 is sufciently elongated so that the uprights of thesliding bar 46 will not interfere with the support 7.

53 and 54 are adjusting-screws to take up the wear of the steel facesagainst which the cams act.

55, Figs. 1 and 3, is a friction-pulley mounted upon the sleeve 56,which sleeve is keyed to the reversing-shaft 35, and 57 is a cam on theopposite end of said sleeve, which cam is connected with the clutch 58by the arm 59.

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60 is the driving-pulley on the lathe-spindle 6l, and 62 is also apulley on this spindle for E reversing it to run the carriage back at agreater speed. This spindle is connected to the Vfeed-screw 63 throughthe gears 6 in the usual manner.

The stop-clutch or escapement mechanism consists of the sleeve 65,provided with the.

arm 65. This sleeve is adapted to slide freely through the bracket 39 ofthe head-stock and is not secured directly to the reversingsha'ft 35,but to the fixed collar 66 on said shaft through the medium of the screw67. There are two longitudinally-threaded holes in the sleevediametrieally opposite each other Vfor the purpose presently to bedescribed. One of these holes, 68, is shown at Figs. and 1l.

69 is a stop secured to the liead-stock, and l 70 is another stop,secured to the bracket 39, with which stops the arm 651L willalternately engage.

7l and 72 are adjustable Stop-collars secured to the reversing-shaft andare set the proper distance apart to represent the travel of thecarriage in either direction.

lVhen the arm 65 is in contact with either of the stops 69 or 70, thereversing-shaft 35 cannot turn, but the friction-pulley will continue torotate. As soon, however, as the said arm is released from either ofsaid stops the reversing-shaft will be brought under the influence ofthe friction-pulley and given one-half of a revolution in the following4manner, viz: ln Figs. 6 and 7 the arm 65" is in contact with the stop70 and the carriage is moving forward in the direction of the arrow /1to cut a right-hand thread. Now when the carriage 2 engages the collar71, which, as before mentioned, is fixed to the reversing-shaft, it willmove the reversingshaft in the saine direction, and by reason of thecollar 66 being also fixed to said shaft the sleeve 65 will also becarried with such shaft. This will carry the arm 65LL out of engagementwith the stop 70, and the instant said arm is released said shaft isimmediately brought under the influence of the frictionpulley and willmake one-half of a revolution, which will bring the arm 65" in contactwith the other stop. 69. (See Figs. 8 and El.) This movement of saidshaft will cause the cams il and 4:2 (see also Figs. 4 and 5) to releasethe tools 5 and 6 from the work by carrying their tool-holders 3 and 4coutward. This partial rotary movement of the reversclutch 58 intoengagement with the fast reversing-pulley 62, and thereby reverse thetravel of the carriage 2. Vhen, therefore,

tion. This will move the arm 65*L olf the stop 69, and as soon as it isreleased the frictionpulley 55 will cause the reversing-shaft to turnand bring the arm 65 again in contact with the stop 70, and thustemporarily check the rotation of said shaft. This last partialrevolution of said shaft will, through the medium of the cams Ll and a2,have carried the tool-holders 3 and 4 inward in readiness for theirtools to engage with a piece of work (not shown) on the centers 73 and7T.

W'hen the carriage has reached its extreme backward travel to throw thetool-holders toward the center in cutting right hand threads, theslide-bai' 27 on the front of the lathe will also have engaged the stop26, so as to give an additional inward movement to the tools and takeotl'anotherchip, and so on until the proper depth of the thread isreached. This is determined by means of the stop 75, adjustably securedto the rachet-wheel 2Q, as shown at Fig. i3. 75lL is a curved tailpieceprojecting Vfrom this stop and resting on the periphery of therachet-wheel. 76 is a screw for holding the block 75 in any position onsaid wheel. ln cutting threads or turning the stop 75 is so placed onthe ratcliet-wheel in such a position that when the said wheel has beenrotated so as to bring the thin endof the curved tailpiece ofthe stop 75directlv under the center of said wheel the pawl in its backward strokewill ride on said tailpiece and not engage the ratchet-teeth. lt willthus be seen that after the last eut has been taken and there is no oneat hand to stop the lathe the carriage may continue to travel backwardand forward to open and close the tool-holders without doing any damage,as the further feeding in of the tool-holders has been checked by thestop 75.

In cutting' left-hand threads the drivingscrew 67 for the stop-clutch 65is transferred from the hole 68, Figs. l0 and 1l, to the hole opposite.This will bring the arm 65*l against the under side of the stop 70 andthe cams -ll and l2 into another position relative to the travel of thecarriage, so that when said carriage has traveled forward to engage thecollar 71 the cutting-tools will engage the work and when the reverseposition of the carriage has been reached the tools will be movedoutward. These movements are the reverse of the movements described forright-hand work.

, lathe, and is connected to the reversing-shaft, ing-shaft will alsogive a partial rotary movement to the cam 57, which will bring the saidcarriage engages with the collar 72 on its 1 backward travel, thereversing-shaft will be longitudinally moved in the opposite direciother piece.

whereby said shaft may be operated by hand.

From the Vforegoing description it will readily be seen that the machinecan either be operated by hand, as an ordinary lathe, or automatically,and when set to work automatically it requires no further attention thanto remove the linished work and put lin an- IOO Another great advantage,al-

ready mentioned, is that the work cannot be spoiled by neglecting toremove it after the last cut is taken.

There are many details of construction which may be varied withoutdeparting from the spirit of the invention, the gist of which consists,essentially, in a reversing-shaft adapted to reverse the carriage at anypredetermined point and to cause the cutting-tools to retreat from thework at one extreme point of the travel of the carriage, and be advancedtoward the Work at the other eXtreme point of the travel of saidcarriage, and, further, the said reversing-shaft is to remain in a stateof rest while the carriage is traveling. It will also be understood thatone of the tool-holders can be removed and only one tool-holder and onecutting-tool used, if desired.

Having thus described the invention, what is claimed as new is l. rlhecombination, in a machine of the character described having' a travelingtoolsupporting carriage, a head-stock and spindle, said spindle carryingdriving and reversing pulleys with interposed clutch mechanism, of anintermittently-rotatable reversing-shaft, means for connecting saidclutch mechanism with said shaft, a continuously-running friction-pulleyadapted to rotate said shaft, means lwhereby said shaft is heldstationary against the rotative influence of said friction-pulley whilethe carriage is traveling, and means whereby said shaft is released bysaid carriage and permitted to be rotated by said frictionpulley, forthe purpose set forth.

2. The herein-described improvement in a machine of the characterdescribed, consisting, in combination with a driving-spindle carryingdriving and reversing pulleys and interposed clutch mechanism and atraveling toolsupporting carriage connected to said spindle, of anintermittently-rotatable reversing-shaft carrying means for connectingit with said clutch mechanism, a continuously-running friction-pulley onsaid shaft, means for checking the rotation of said shaft, tool-holderson said carriage adapted to move at right angles to the travel of saidcarriage, means on said reversing-shaft to effect such movement of saidtool-holders at predetermined points in the travel of said carriage, forthe purpose set forth. 1

3. The herein-described improvement in a machine of the characterdescribed having a work-driving spindle and a traveling toolsupportingcarriage, of an intermittently-roed on said shaft and carrying an armadapted to alternately engage oppositely-placed stops, said sleeve beingadjustably secured to a collar rigid on said shaft and a bearing inwhich said sleeve is adapted to move longitudinally with said shaft, forthe purpose set forth.

4f. The combination with a driving-spindle mounted in a head-stock andcarrying driving and reversing pulleys with interposed clutch mechanism,a traveling tool-supporting carriage, means for operating said carriage,a reversing-shaft, means for connecting said shaft with said clutchmechanism, escapement mechanism connected with said shaft, said shaftcarrying a continuous-running frictionpulley to ehfect an intermittentrotary movement through the medium of said frictionpulley and escapementmechanism, said shaft carrying adjustable collars adapted to be engagedby the carriage to effect a longitudinal movement of said shaft and thusactuate the interposed clutch mechanism to effect the reversal of saidspindle and escapement mechanism for the purpose set forth.

5. rlhe herein-described improvement in a machine of the characterdescribed, having a driving and work-supporting spindle and a travelingcarriage, of an intermittently-rotatable reversing-shaft carrying meansfor connecting it with said spindle, means whereby a rotary motion isimparted to said shaft, and means for temporarily checking said motion,oppositely-located movable tool-holder-carrying supports mounted on saidcarriage and means whereby said supports are controlled by saidreversing-shaft, and means whereby said tool-holders are independentlyoperated on said supports, for the purpose set forth.

6. rlhe combination, in a machine of the character described having adriving and worksupporting spindle carrying pulleys with interposedclutch mechanism, and a traveling tool-carrying carriage, of areversing-shaft.

and means to connect it with said clutch mechanism, acontinuously-running friction-pulley adapted to rotate said shaft, anarm on said shaft and oppositely-arranged stops with which said armcontacts to hold the shaft against rotation, adjustable collars on saidshaft adapted to be engaged by the carriage and thereby move the shaftlongitudinally to disengage said arm from the stops,oppositely locatedsupports carrying tool-holders mounted on said carriage and under thecontrol of the reversing-shaft, tool-holders mounted on said supports,and means whereby said toolholders can be independently operated on saidsupports, for the purpose set forth.

7 rlhe combination, in a machine of the character described having atraveling tool-supporting carriage, of a reversing-shaft having anintermittent rotary movement and an intermittent longitudinal movement,adjustable stops mounted thereon to be engaged by said carriage, andmeans for temporarily check- IOO IOS

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ing the rotary movement of said shaft, adjustable tool-holder supportsmounted on said carriage and oppositelylocated with respect to the workto be cut, for the purpose set forth.

S. The eombination,in an automatic machine of the character describedhaving a traveling v'arriage, of a reversing-shaft mounted to rotate andmove longitudinally in bearings on the machine and means to rotate it,adjustable stops thereon adapted to be engaged by the carriage to effectthe longitudinal movement, stops to check the rotary movement,oppositely-located tool-holders mounted on adjustable supports slidablymounted on the carriage, and means on the reversing-shaft for effecting'a movement of said supports on the carriage, for the purpose set forth.

9. The combination,in an automatic machine of the character describedhaving a traveling` carriage` of movable supports carigving toolholdersmounted on said carriage, means for automatically feeding saidtool-holders toward the work or center line of the machine, areversing-shaft mounted to rotate and move longitudinally in bearings onthe machine, adjustable stops thereon adapted to be engaged by thecarriage to effectthe longitudinal movement, and stops to check therotary movement, means on said shaft for effectinga movement of saidsupports on the carriage to and from the center line of the machine sothat, when the carriage has traveled a predetermined distance in onedirection, it will release said shaft from one of its stops and therebycause it to be rotated against the other of said stops, which rotarymovement will effect the withdrawal of said supports and the reversal ofsaid carriage, and when said carriage has traveled a predetermineddistance in the opposite direction, it will again effect tberelease ofsaid shaft, which shaft in rotating to the other of said stops willcarry the supports toward the center line of the machine, for thepurpose set forth,

10. The combination. in an automatic machine of the character described,of a reversing-shaft having an intermittent rotary movement and anintermittent longitudinal movement, sup]iorting-birings therefor, asleeve on said sha ft carrying a stop-arm, stops against which said armis adapted to alternately1 engage, said stops located outside of saidshaft and sleeve, a collar splined to said shaft, and means forconnecting said collar with said sleeve, for the purpose set forth.

l1. The combination, in an automatic machine of the character described,having a traveling carriage, and a work supporting and driving spindlecarrying clutch mechanism, a sleeve ljournaled in a stationary part ofthe machine and carrying' a driving-pulley and cam, means whereby saidcam is connected with said clutch mechanism, a reversing-shaft mountedto rotate and move longitudinallyin bearings on the machine, and also tomove longitudinally in said sleeve and be rotated therewith, adjustablestops on said shaft adapted to be engaged by the carriage to effect thelongitudinal movement, stops to check the rotary movement,o[mositely-located tool-holders mounted on adjustable supports slidablymounted on the carriage, and means on the reversing-shaft for effectinga movement of said supports on said carriage, and means for effecting amovement of the tool-holders on said supports, for the purpose setforth.

1Q. The combination, in an automatic machine of the character describedhaving a traveling carriage carrying one or more tool-holders adapted tomove at right angles to the travel of said carriage, and a work holdingand driving spindle, of a reversing-sliaft having an intermittentlongitudinal movement and an intermittent partial rotary movement sothat, through the instrumentality of said shaft, all of the above-namedmoving parts are reversed, for the purpose set forth.

1B. The combination, in an automatic machine of the character described,of a work holding' and driving spindle and a traveling tool-supportingcarriage carrying one or more tool-holders and movable supports for saidholders, a reversing-shaft having' an intermittent movement,reversingconnections between the spindle and said shaft, said shaftadapted to be moved longitudinally, means on said shaft to effect therotary movement, adjustable stops on said shaft adapted to be engaged bythe carriage to effect the longitudinal movement, stops to check therotary movement, said stops so arranged that the longitudinal movementof the shaft releases and engages such stops and operative connectionsbetween the shaft and movable tool-holder supports and the spindle sothat, through the instrumentality of said shaft, the carriage,toolholder supports and spindle are reversed, for the purpose set forth.

it. The combination, in an automatic machine'of the character describedhaving a bed and a traveling carriage mounted thereon of movablesupports slidably mounted on said carriage and oppositely locatedthereon with respect to the work or center line of the machine,tool-holders on said supports, a feedscrew, means for connecting' therear toolholder therewith, said screw projecting outside of the carriageand carrying a disk or handle portion, a threaded sleeve looselyembracing said feed-screw, and means for connecting the fronttool-holder with said sleeve whereby the fronttool-holder can beoperated independent of the rear one, said sleeve projecting outside ofthe carriage and carrying a dish or handle having a hub, means forlocking said handles together, said hub carrying a ratchet-wheel securedthereto and an arm loosely mounted thereon, means for actuating saidratchet-wheel to actuate both tool-holders, for the purpose set forth.

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15. The combination, in an automatic machine of the character describedhaving a traveling carriage and a driving-spindle, of oppositely-locatedtool-holders mounted on adjustable supports slidably mounted on saidearriage, a reversing-shaft mounted to rotate and move longitudinally inbearings on the machine and means for rotating it, adjustable stopsthereon adapted to be engaged by the carriage to effect the longitudinalmovement, stops to check the rotary movement, reversing clutch mechanismon the spindle and means for connecting the shaft With said clutchmechanism, means on said shaft to effect the movement of said supports,so that, through the instrumentality of said shaft, the supports are`rst actuated to or from the Werl; or center line of the machine, andsecond, the carriage is reversed, for the purpose set forth.

16. The combination, in an automatic machine of the character describedhaving a traveling carriage, a Work holding' and driving spindlecarrying pulleys With interposed clutch mechanism, of a reversing-shaftmounted to rotate and to move longitudinally in bearings on the machine,means -for connecting said shaft with the clutch mechanism, adjustablestops thereon adapted to be engaged by the carriage to effect thelongitudinal movement, means to check the rotary movement,oppositely-located tool-holders mounted on adjustable supports slidablymounted on the carriage, a cam actuated by said shaft-for effecting amovement of said supports on said carriage, for the purpose set forth.

17. The combination, in an automatic machine of the character describedhaving a bed and a traveling carriage thereon, oppositelylocatedtool-holders adjustably mounted on supports slidably mounted on thecarriage, a Work holding' and driving spindle carrying pulleys andinterposed clutch mechanism therefor, with the following cooperatingelements adapted to effect, first, a movement of the supports on thecarriage to or from the Work or center line of the machine, and sec-lond, a reversal of the carriage, viz: a reversing-shaft mounted to beintermittently rotated and reciprocated longitudinally in bearings onthe machine, adjustable stops on said shaft adapted to be engaged by thecarriage to effect the longitudinal movement, stops adapted totemporarily check the rotary movement, means on saidshaft to effect themovement of the supports on said carriage, and means substantially asshown for connecting the shaft with the clutch mechanism, for thepurpose set forth.

18. In an automatic machine of the character described, comprising, atraveling carriage, oppositely-located tool-holders adjustably mountedon supports slidably mounted on the carriage, a Work holding and drivingspindle carrying pulleys with interposed clutch mechanism, areversing-shaft mounted to be intermittently rotated and reciprocatedlongitudinally in bearings on the machine, adjustable stops on the shaftadapted to be engaged by the carriage to etl'ect the longitudinalmovement, stops to temporarily check the rotary movement, means on saidshaft for effecting a movement of the supports on the carriage, andmeans substantially as shown for connecting the shaft with the clutchmecl anism, all combined and arranged so that, through theinstrumentality of the reversingshaft, the supports onA the carriage arefirst moved to or from the center line of the machine, and such movementimmediately followed by areversal of the spindle and carriage, for thepurpose set forth.

19. The combination, in a machine of the character described having aWork-holding and Work-driving spindle, of a bed having a travelingtool-supporting carriage, tool-holders carrying cutting-tools mounted onsaid carriage and on opposite sides of the center line of the spindle orWork to be cut, a reversing-shaft, means on said shaft forsimultaneously engaging the cutting-tools of both of said holders withthe Work and disengaging them therefrom, for the purpose set forth.

Signed at Bridgeport, in the county of Fairfield and State ofConnecticut, this 21st day of September, A. D. 1901.

JAMES COULTER. SARAH E. LAlVS, Alim/wishwird@ of zf/w estat@ of Albe/'l).

Lez/ws, deceased. lVituesses:

A. K. LovnLL, GEORGE WV. FINN.

